When it comes to the world of video games on the PC, some of the most popular games available are MMORPG titles. These same titles also offer the most profitability for the game studios thanks to monthly subscriptions and intense fan bases for the titles.

Blizzard recently launched the second expansion pack for the wildly popular World of Warcraft MMO called Wrath of the Lich King. Blizzard officially acknowledged this week that Lich King has broken the sales record to become the top selling PC game ever in its first 24 hours of release.

Lich King sold a whopping 2.8 million copies in its first 24 hours of availability. Interestingly, the previous first place for day one sales was the first expansion pack for World of Warcraft called The Burning Crusade.

The subscriber base for World of Warcraft is massive at 11 million players globally making the title the crown jewel in the Blizzard games catalog. Blizzard says that over 15,000 stores opened at midnight globally to participate in the launch of Wrath of the Lich King.

Unlike some popular midnight launch events, there are no reports of anyone being shot waiting to get a copy of the game. However, one boy in Europe did collapse after playing the expansion for 24 hours straight without taking a break or eating. Some UK officials and parents fear that the game is too addictive for young players to handle.

"Well, we didn't have anyone in line that got shot waiting for our system." -- Nintendo of America Vice President Perrin Kaplan